X CONTENTS. 



TACK 



CLASS II. POLYPS. (Polypi.) .... 60 97 



Systematic Arrangement of Polyps 73 97 



Section I. Anthozoa 73 84 



Order I. Hydriformia 73 77 



Fam. i. Hydrina 73 74 



II. Serlularina 75 77 



Order II. Octactinia 77 84 



Fam. in. Xenina 77 78 



iv. Halcyonina, 78 80 



v. Petmatulina 80 81 



VI. TuUporina, 82 



vn. Corticata . 82 84 



Order III. Polyactinia 8492 



Fam. vni. Madreporina, 85 



ix. Ocellina 86 



x. Gyrosa, 86 87 



XI. Funyina 87 89 



xn. Zoanthina 89 90 



xni. Actinina 90 92 



Section II. Bryozoa 92 97 



Order IV. Bryozoa 92 97 



Fam. xiv. Stelmatopoda 93 96 



xv. Lophopoda 96 97 



CLASS III. SEA-NETTLES. (Acalephce.) . . 98 126 



Systematic Arrangement of Sea-nettles 108 126 



Order I. SipJionopJiorce 108 119 



Fam. i. Velellidce . . 108 in 



II. Physsophoridce . .... in 116 



,, in. Hippopodidce 116 



iv. DipJiyidce 116 119 



Order II. Ctenophorce 119 121 



Fam. V. Beroidea 120 121 



Order III. Discophorce 122 



Fam. vi. Geryonidce 122 123 



vn. RhizostomidcR 123 



vin. Medusidea 123 124 



ix. Oceanidce 124 125 



x. JEquoridce 125 126 



